• Project

I-5 - NB Seneca to SR 520 - Mobility Improvements

Project overview

To improve mobility on I-5 through Seattle, we will move barrier on a 1,500-foot section to create three lanes, add ramp meters for the Dearborn/I-90 and Cherry Street on-ramps and extend the Active Traffic and Demand Management system north to SR 520.

Spring 2021 - Fall 2022
Project status
$27.5 million

What to expect

During construction, people traveling on northbound I-5 should expect nighttime lane and full closures.

There will be 10-12 nights with full northbound closures Yesler to SR 520. There will also be northbound mainline nighttime closures with all traffic onto collector/distributor. Northbound traffic will shift onto express lanes when possible and there will be nighttime on-ramp and surface street closures.

Work between Yesler Way and SR 520 will add a short section of a third lane between Seneca Street and the Washington State Convention Center, ramp meters at the Dearborn/I-90 and Cherry Street on-ramps and extend the Active Traffic and Demand Management system.